Monitoring
Dashboard/Crypto Hacks/Poly Network
CRITICALEthereum, BSC, Polygon·Improper Access Control·#4 all-time

Poly Network

$611.0M stolenTuesday, August 10, 2021 · 1857 days ago

Corpus updated 2026-09-10

Other recorded incidents at Poly Network

DefiLlama records 2 separate incidents under this name.

Poly Network — 2023
Ethereum, BSC, Polygon$5.0M

Situation Summary

8/10/2021 — EXPLOIT DETECTED

$611.0M drained from Poly Network on Ethereum, BSC, Polygon.

TECHNIQUE: IMPROPER ACCESS CONTROL

Social Reactions

@ZachXBT coverage

On-chain investigator · Often first to report

View on 𝕏 →

Community discussion

Live search for “Poly Networkhack” on 𝕏

View on 𝕏 →

DefiLlama incident data

Full database of DeFi hacks and exploits

View →

Related — Improper Access Control Exploits

Ankr
12/2/2022$5.0M
Bitcoin Mission
4/22/2025$1.3M
BitGrail
2/12/2018$170.0M
Mirror
10/8/2021$90.0M
Coinbene
3/25/2019$40.0M

Nearby in the record

Punk Protocol
8/10/2021$8.9M
DAO Maker Vesting
8/12/2021$7.0M
Zerogoki
8/8/2021$670K
NEKO
8/13/2021$2.2M
WaultSwap
8/4/2021$930K
Acala Network
8/13/2021$1.6M
← All incidents

Source: DefiLlama · 1262 recorded incidents · data as of 2026-09-10 05:04 UTC